/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.discovery.topics;

/**
 * List of Topics used in the Topic discovery scheme Created on Apr 8, 2005
 * 
 * @author Harshawardhan Gadgil (hgadgil@grids.ucs.indiana.edu)
 */

public interface Topics {

   /** Used to discover TDNs */
   public static final String TDN_DISCOVERY = "Services/Discovery/TopicDiscoveryNodes";

   /**
    * Used to broadcast Topic advertisements so that listening TDNs may store it
    * for future retrieval
    */
   public static final String TOPIC_ADS = "Services/Discovery/TopicAdvertisements";

   /** Used to propagate Topic Discovery Requests */
   public static final String TOPIC_DISCOVERY_REQUEST = "Services/Discovery/Topics/Request";

   /** Used to send Topic Discovery Responses */
   public static final String TOPIC_DISCOVERY_RESPONSE = "Services/Discovery/Topics/Response";

   /**
    * TDN base topic <br>
    * The final topic string will be 'TDN_TOPIC_BASE/TDN_ID'
    */
   public static final String TDN_TOPIC_BASE = "Services/Discovery/TDN";

   /**
    * Entity topic base <br>
    * The final topic string will be 'ENTITY_TOPIC_BASE/ENTITY_ID'
    */
   public static final String ENTITY_TOPIC_BASE = "Entity";

   // Different types of Topic matching

   public static final int MATCHING_STRING = (byte) 1;
   public static final int MATCHING_INTEGER = (byte) 2;
   public static final int MATCHING_REGEX = (byte) 3;
   
   // NOT YET IMPLEMENTED, 
   // TODO: Implement as requires
   public static final int MATCHING_TAGVALUE = (byte) 4;
   public static final int MATCHING_XPATH = 5;

}